Metric system: How many nanoseconds does it take for a computer to perform one calculation if it performs 6.7 × 107 calculations per second?
A. 15 ns
B. 67 ns
C. 11 ns
D. 65 ns
Answer: A
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The rapid fluctuations of quasars show that the energy emitting portions of these objects must be very small
a. True b. False Indicate whether the statement is true or false
Acceleration: An object moving in the +x direction experiences an acceleration of +2.0 m/s2. This means the object
A. travels 2.0 m in every second. B. is traveling at 2.0 m/s. C. is decreasing its velocity by 2.0 m/s every second. D. is increasing its velocity by 2.0 m/s every second.
Projectile Motion: For general projectile motion with no air resistance, the horizontal component of a projectile's acceleration
A. is always zero. B. remains a non-zero constant. C. continuously increases. D. continuously decreases. E. first decreases and then increases.
When our Earth becomes tidally locked with the Moon, which of the following statements will be true?
A. The Moon will only be visible from one side of Earth. B. An astronaut on the Moon will always see the day side of Earth. C. There will be no eclipses. D. The Moon will not go through phases.